// =================================================================================================
// Copyright 2013 Twitter, Inc.
// -------------------------------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this work except in compliance with the License.
// You may obtain a copy of the License in the LICENSE file, or at:
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// =================================================================================================

package com.twitter.common.metrics;

public interface HistogramInterface {

  /**
   * Return the name of the histogram.
   */
  String getName();

  /**
   * Resets the state of this Histogram. Clears all data points collected so far.
   */
  void clear();

  /**
   * Adds a data point.
   */
  void add(long n);

  /**
   * Returns a snapshot of the histogram.
   */
  Snapshot snapshot();
}
